pub type PFN_vkEnumerateDeviceExtensionProperties = unsafe extern "system" fn(physical_device: PhysicalDevice, p_layer_name: *const c_char, p_property_count: *mut u32, p_properties: *mut ExtensionProperties) -> Result;
pub type PFN_vkEnumerateDeviceExtensionProperties = unsafe extern "system" fn(physical_device: PhysicalDevice, p_layer_name: *const c_char, p_property_count: *mut u32, p_properties: *mut ExtensionProperties) -> Result;